RE: [boost] Re: Version #defines?

From: Michiel Salters (Michiel.Salters_at_[hidden])
Date: 2001-03-16 07:29:41

What do you think 0102101 / 100000 is ?

Hint: it isn't 01

Michiel Salters

> -----Original Message-----
> From: Jens Maurer [mailto:Jens.Maurer_at_[hidden]]
> Sent: Friday, March 16, 2001 12:52 PM
> To: boost_at_[hidden]
> Subject: [boost] Re: Version #defines?
> 
> 
> 
> Let's not get carried away by the version stuff, let's keep
> it simple.
> 
> #define BOOST_VERSION 0102101
> 
> and document that 
> 
>  BOOST_VERSION % 100 is the sub-minor version
>  BOOST_VERSION /100 % 1000 is the minor version
>  BOOST_VERSION / 100000 is the major version
> 
> checking whether 1.21.0 or later is then as easy as
> 
> #if BOOST_VERSION >= 0102100
> 
> It should be a macro for conditional compilation purposes.
> 
> For those who want to format it nicely on the screen, they
> have to do it themselves.  Additionally, using my proposed
> format (and the accompanying specification of the meaning)
> means that people are less likely to do their check wrong
> (see __GCC_MINOR__ vs __GCC_MAJOR mentioned early in this
> thread).
> 
> A scheme similar to this has precedent with nearly all
> compilers I know.
> 
> Jens Maurer
> 
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